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https://issues.apache.org/jira/browse/HDDS-174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16612901#comment-16612901
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Arpit Agarwal commented on HDDS-174:
------------------------------------
Also we should print the exception stack trace on the client side when
possible. I hit an issue where the DataNode was not registered. Key creation
failed with {{KEY_ALLOCATION_ERROR}}. The SCM logs showed the exception to be:
{code}
2018-09-12 17:39:27,842 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1
on 9863, call Call#4 Retry#0
org.apache.hadoop.ozone.protocol.ScmBlockLocationProtocol.allocateScmBlock from
127.0.0.1:50389
org.apache.hadoop.hdds.scm.exceptions.SCMException: Unable to create block
while in chill mode
at
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.allocateBlock(BlockManagerImpl.java:207)
at
org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer.allocateBlock(SCMBlockProtocolServer.java:143)
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.allocateScmBlock(ScmBlockLocationProtocolServerSideTranslatorPB.java:74)
at
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:6271)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)
2018-09-12 17:43:52,806 INFO
org.apache.hadoop.hdds.scm.server.StorageContainerManager: STARTUP_MSG:
{code}
> Shell error messages are often cryptic
> --------------------------------------
>
> Key: HDDS-174
> URL: https://issues.apache.org/jira/browse/HDDS-174
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Reporter: Arpit Agarwal
> Assignee: Nanda kumar
> Priority: Blocker
> Labels: newbie
> Fix For: 0.3.0
>
>
> Error messages in the Ozone shell are often too cryptic. e.g.
> {code}
> $ ozone oz -putKey /vol1/bucket1/key1 -file foo.txt
> Command Failed : Create key failed, error:INTERNAL_ERROR
> {code}
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